Van der Aa is a Dutch toponymic surname meaning "from the Aa (river)", of which there are a few dozen in the Low Countries alone.[1]

Those bearing this name include:

• Abraham Jacob van der Aa (1792–1857), Dutch author of biographical and geographical dictionaries of the Netherlands
• Christianus Carolus Henricus van der Aa (1718–1793), Dutch pastor and secretary of science society
• Christianus Robidé van der Aa (1791–1851), Dutch jurist and writer
• Cornelis van der Aa (1749–1816), Dutch historian
• Dirk van der Aa (1731–1809), Dutch painter
• Hubertus Antonius van der Aa (1935–2017), Dutch mycologist
• Jan III van Gruuthuse en van der Aa (1368–1420), Flemish-Burgundian knight
• Michel van der Aa (born 1970), Dutch composer
• Petrus van der Aa (1530–1594), Brabantine jurist
• Philips van der Aa (died after 1586), Dutch politician
• Pieter van der Aa (1659–1733), Dutch publisher
• Sandra van der Aa (born 1972), Dutch athlete

• Aa (surname)